As we all know, a large amount of heat will be generated in the process of processing metal plates with optical fiber laser cutting machine. If the heat cannot be rapidly dispersed to the air, it will lead to the edge burning phenomenon. For example, when metal laser cutting machine is punching, the space for heat diffusion inside the hole is small, and the heat is too concentrated, resulting in high workpiece temperature and edge residue. In addition, in the process of thick plate processing, the accumulation of metal melt and heat on the material surface, coupled with insufficient auxiliary air flow, will lead to the heat can not be dispersed, which will lead to excessive combustion and edge burning of metal plates.

So how to solve the problem of metal laser cutting machine edge burning and residue?

The main idea to solve the problem of carbon steel punching and edge burning is how to restrain the influence caused by oxidation reaction heat. This method can be used to use auxiliary gas and delay the power switch to release air or nitrogen for laser cutting when the oxygen punching is finished. This method can be used to process holes on 1/6 thick plates.

Low frequency pulse cutting conditions and peak output power conditions can reduce the heat output and optimize the cutting conditions. The condition is set as single pulse laser beam, with high peak output, high energy intensity and low frequency, which can reduce the accumulation and heat output of molten metal on the material surface.

To sum up, the method to deal with the edge burning of metal laser cutting machine is to increase the working pressure of the auxiliary gas, and set the maximum output and low frequency pulse standards. When the auxiliary gas is used in air, it will not burn excessively and will not produce residue at the bottom, just as when nitrogen is used.